Function ensure_module_imported

Lib/test/support/import_helper.py:440–454

Return the corresponding module. If it was already imported then return that. Otherwise, try importing it (optionally clear it first if None). If that fails then create a new empty module. It can be helpful to combine this with ready_to_import() and/or isolated_modules().

(name, *, clearnone=True)

def ensure_module_imported(name, *, clearnone=True):
    """Return the corresponding module.

    If it was already imported then return that.  Otherwise, try
    importing it (optionally clear it first if None).  If that fails
    then create a new empty module.

    It can be helpful to combine this with ready_to_import() and/or
    isolated_modules().
    """
    if sys.modules.get(name) is not None:
        mod = sys.modules[name]
    else:
        mod, _, _ = _ensure_module(name, False, True, clearnone)
    return mod